But their glossy ads claim to have innovated, and that they listned to users! Which is the worst possible way to design a chair!
The only innovation I can see is bright yellow springs and no actual suspension. Oh and more colours! See they asked physios, health care pros, and end users... No comfortable fat tyresm no sensible sized batteries, no ground clearance, little real outdoor ability, and in fact little change from their other 6 wheel chairs.
And yes like the TDX they either rock back and forth, or they get stuck. Because the castor wheels are sprung with those big adjustable yellow springs onto the floor. If stiff enough then you dont fall forwards. But get stuck all over the place. If loose enough you get stuck less but suffer the problem joeC talks about. And the correct setting is where they are somewhere in between.
But the correct setting takes weight off the drive wheels as they are lifted by the casters pushing into the ground. So you still get stranded uselessly. They are pretty good indoors and this is where 90 percent of users spend the most time hence the popularity. But hopeless in the real outside world.
And once you add a cushion thats as wide as your bum at 18 inches then the tiny batteries they used to get it to 24 inches wide become pointless as its then 25+ across the arms! And measured WITH footplates and rear casters extended its both longer and the same width as my own chair with the full sized batteries and 12 inches of rubber!!!http://www.wheelchairdriver.com/why-all ... apable.htm